$OpenBSD: patch-imakemdep_h,v 1.1 2017/02/28 21:46:51 naddy Exp $
--- imakemdep.h.orig	Sat Aug 17 12:11:06 2013
+++ imakemdep.h	Thu Feb 23 15:36:01 2017
@@ -330,6 +330,10 @@ in this Software without prior written authorization f
 #     define DEFAULT_CC "gcc"
 #    endif
 #   endif
+#   if defined(__OpenBSD__)
+#    undef USE_CC_E
+#    define DEFAULT_CPP "/usr/libexec/tradcpp"
+#   endif
 
 #  endif /* !defined (CROSSCOMPILE) || defined (CROSSCOMPILE_CPP) */
 /*
